inverse_sht

de_ebsd.index.spherical.inverse_sht(coeffs, theta, phi)

Stateless inverse transform: coefficients a_lm -> samples on a grid.

coeffs has shape (..., (L + 1) ** 2); the bandwidth is inferred from its length. Returns complex samples (..., N_theta, N_phi) at the theta/phi nodes (the dense synthesis sum_lm a_lm Y_lm).